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net: dsa: b53: remove eee_enabled/eee_active in b53_get_mac_eee()

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b53_get_mac_eee() sets both eee_enabled and eee_active, and then
returns zero.

dsa_slave_get_eee(), which calls this function, will then continue to
call phylink_ethtool_get_eee(), which will return -EOPNOTSUPP if there
is no PHY present, otherwise calling phy_ethtool_get_eee() which in
turn will call genphy_c45_ethtool_get_eee().

genphy_c45_ethtool_get_eee() will overwrite eee_enabled and eee_active
with its own interpretation from the PHYs settings and negotiation
result.

Thus, when there is no PHY, dsa_slave_get_eee() will fail with
-EOPNOTSUPP, meaning eee_enabled and eee_active will not be returned to
userspace. When there is a PHY, eee_enabled and eee_active will be
overwritten by phylib, making the setting of these members in
b53_get_mac_eee() entirely unnecessary.

Remove this code, thus simplifying b53_get_mac_eee().

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/E1rWbNI-002cCz-4x@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2024-02-04 12:13:28 +00:00 committed by Jakub Kicinski
parent 0cbfdfe3fb
commit 3465df5533
1 changed files with 0 additions and 6 deletions
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6
drivers/net/dsa/b53/b53_common.c
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@ -2227,16 +2227,10 @@ EXPORT_SYMBOL(b53_eee_init);
int b53_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_keee *e)
{
struct b53_device *dev = ds->priv;
struct ethtool_keee *p = &dev->ports[port].eee;
u16 reg;
if (is5325(dev) || is5365(dev))
return -EOPNOTSUPP;
b53_read16(dev, B53_EEE_PAGE, B53_EEE_LPI_INDICATE, &reg);
e->eee_enabled = p->eee_enabled;
e->eee_active = !!(reg & BIT(port));
return 0;
}
EXPORT_SYMBOL(b53_get_mac_eee);